BRAINTREE – Heavy traffic helped Braintree police capture a man they say failed to stop as they pursued him from Granite Street to the highway.

Alexander Fainer, 35, of Glenrose Avenue was stopped and arrested on the southbound side of Route 3 shortly after 2:30 p.m. Thursday in traffic that had slowed to 15 to 25 mph.

He was arraigned Friday in Quincy District Court on charges of possession of OxyContin, assault with a deadly weapon, failure to stop for police, marked-lane violations, breakdown-lane violations and resisting arrest.

A man police saw with Fainer, Alexsy Rentas, 34, of Watertown, was stopped and arrested about the same time in a separate location, a police report on file in Quincy District Court said.

Rentas was charged with possession of Oxycontin with intent to distribute.

Both men were arraigned Friday in Quincy District Court and pleaded innocent.

They were released on $500 cash bail each, and will return to court Oct. 28 for a pretrial hearing.

Rentas’ wife and their two daughters, aged 15 and 9, were in his Acura SUV when he was arrested, the report said.

The police report said the incident began when officers on routine patrol on Granite Street saw a blue Saab make an abrupt U-turn and recognized Fainer as the driver and only occupant.

The report said Fainer is “known to be heavily involved in narcotics use and sales,” and had been arrested in the past for such offenses.

The officers followed Fainer to nearby Partridge Road – which police said was a familiar drug rendezvous – and other officers were called in.

As Fainer paced outside his Saab, talking on a cellphone, the Acura arrived and a man later identified as Rentas got out from the passenger side, police said.

Police said Rentas walked to the Saab and was back in his own vehicle within 5 seconds.

When Fainer turned back onto Granite Street, officers drove in front of and behind the Saab, trying to stop him.

As they slowed, Fainer gunned the Saab, pulled around the cruisers, and headed onto I-93.

Traffic was heavy, so he could only go 15 to 25 mph. On the side of Route 3, Fainer was ordered out of the car at gunpoint.

When police searched him they allegedly found two OxyContin tablets.

Rentas was stopped on Blossom Road and struggled with a detective outside the Acura before he was arrested, police said. Police then found Rentas’ wife, Evelyn Dejesus, on the driver’s side, with their daughters in the car.

Police said the family was headed to the Fun Way Cafe in Foxboro.

The report said police will file a child-abuse-and-neglect complaint.

The report said Rentas had 80 OxyContin pills and $1,023 in cash.

Page 2 of 2 - Lane Lambert may be reached at llambert@ledger.com or follow him on Twitter @LLambert_Ledger.